The problem
I am currently running Robot Framework test cases with a target HW. During the Test Setup, I am flashing the software under test (firmware) to the target device. Due to several reasons, the flashing of the firmware fails sometimes, which causes the whole test case to fail. This is currently preventing me from getting any further meaningful results.
What I want to achieve
I want to detect when the test case fails in a particular Robot keyword during Test Setup. If a test case fails during a particular Test Setup keyword, I will retry/rerun the test case with a different target HW (I have my own Python script that executes the Robot runner with a given target device).
The main problem is that I don't know how to detect when a test case failed in a Test Setup keyword.
What I tried so far
My first guess was that this could be achieved by parsing the output.xml file, but I couldn't extract this information from there.
I have already considered retrying the flashing operation in Test Setup, but this won't work for me. The test case needs to be restarted from scratch (running in a different target HW).
Lastly, using "Run Keyword And Ignore Error" is not a solution neither since Test Setup must be run successfully in order to continue the test case.
The best solution I found so far: how to list all keywords used by a robotframework test suite
from robot.api import ExecutionResult, ResultVisitor
result = ExecutionResult('output.xml')
class MyVisitor(ResultVisitor):
def visit_keyword(self, kw):
print("Keyword Name: " + str(kw.name))
print("Keyword Status: " + str(kw.status))
result.visit(MyVisitor())
Output:
Keyword Name: MyKeywords.My Test Setup
Keyword Status: FAIL
Related
We are trying to automate E2E test cases for an booking application which involves around 60+ steps for each test case. Whenever there is a failure at the final steps it is very much time consuming if we go for traditional retry option since the test case will be executed from step 1 again. On the application we have some logical steps which can be marked somehow through which we would like to achieve resuming the test case from a logical point before the failed step. Say for example, among the 60 steps say every 10th step is a logical point in which the script can be resumed instead of retrying from the step 1. say if the failure is on line number 43 then with the help of booking reference number the test can be resumed from step number 41 since the validation has been completed till step 40 (step 40 is a logical closure point). There might be an option you may suggest to split the test case into smaller modules, which will not work for me since it is an E2E test case for the application which we would want to have in a single Geb Spec. The framework is built using Geb & Spock for Web Application automation. Please share your thoughts / logics on how can we build the recovery scenarios for this case. Thanks for your support.!
As of now i am not able to find out any solution for this kind of problem.
Below are few things which can be done to achieve the same, but before we talk about the solutions, we should also talk about the issues which it will create. You are running E2E test cases and if they fail at step 10 then they should be started from scratch not from step 10 because you can miss important integration defects which are occurring when you perform 10th step after running first 9 steps. For e.g. if you create an account and then immediately search for hotel, you application might through error because its a newly created account, but if you retry it from a step where you are just trying to search for the hotel rooms then it might work, because of the time spent between your test failure and restarting the test, and you will not notice this issue.
Now if you must achieve this then
Create a log every time you reach a checkpoint, which can be a simple text file indicating the test case name and checkpoint number, then use retry analyzer for running the failed tests, inside the test look for the text file with the test case name, if it exists then simple skip the code to the checkpoint mentioned in the text file. It can be used in different ways, for e.g. if your e2e test if going through 3 applications then file can have the test case name and the last passed application name, if you have used page objects then you can write the last successful page object name in the text file and use that for continuing the test.
Above solution is just an idea, because I dont think there are any existing solutions for this issue.
Hope this will give you an idea about how to start working on this problem.
The possible solution to your problem is to first define the way in which you want to write your tests.
I would recommend considering one test Spec (class) as one E2E test containing multiple features.
Also, it is recommended to use opensource Spock Retry project available on GitHub, after implementing RetryOnFailure
your final code should look like:
#RetryOnFailure(times= 2) // times parameter is for retry attempts, default= 0
class MyEndtoEndTest1 extends GebReportingSpec {
def bookingRefNumber
def "First Feature block which cover the Test till a logical step"()
{
// your test steps here
bookingRefNumber = //assign your booking Ref here
}
def "Second Feature which covers a set of subsequent logical steps "()
{
//use the bookingRefNumber generated in the First Feature block
}
def "Third set of Logical Steps"()
{ // your test steps here
}
def "End of the E2E test "()
{ // Your final Test steps here
}
The passing of all the Feature blocks (methods) will signify a successful E2E test execution.
It sounds like your end to end test case is too big and too brittle. What's the reasoning behind needing it all in one script.
You've already stated you can use the booking reference to continue on at a later step if it fails, this seems like a logical place to split your tests.
Do the first bit, output the booking reference to a file. Read the booking reference for the second test and complete the journey, if it fails then a retry won't take anywhere near as long.
If you're using your tests to provide quick feedback after a build and your tests keep failing then I would look to split up the journey into smaller smoke tests, and if required run some overnight end to end tests with as many retries as you like.
The fact it keeps failing suggests your tests, environment or build is brittle.
I have an existing project that uses Specflow and SpecRun to run some tests against Sauce Labs. I have a BeforeSenario hook that creates a RemoteWebDriver and an AfterScenario hook that closes this down.
I've now moved this into another project (copied the files over, just changed the namespace) and the first test runs fine but then get the following error:
An exception of type 'OpenQA.Selenium.WebDriverException' occurred in WebDriver.dll but was not handled in user code
Additional information: Unexpected error. The command you just sent (POST element) has no session ID.
This is generally caused by testing frameworks trying to run commands after the conclusion of a test.
For example, you may be trying to capture a screenshot or retrieve server logs
after selenium.stop() or driver.quit() was called in a tearDown method.
Please make sure this process happens before the session is ended.
I've compared the project and it's using the same version of SpecFlow, same .Net version. I can't see any difference between the two projects.
In my steps I have the following line:
public static IWebDriver driver = (IWebDriver)ScenarioContext.Current["driver"];
which I think is the issue as instead of getting a new instance of it from the ScenarioContext it's using the previous test's version which has now been disposed.
But I can't see why this is working in another project instead?
I am using the Specflow example in Github here
UPDATE
Looks like I've found the issue. In the Default.srprofile the testThreadCount was 1 whereas the value in the working solution was 10. I've now updated this to match and it works.
Not sure what this value should be though. I assume it shouldn't be the same number of tests, but then how do I get around my original issue of the shared driver context?
TestThreadCount specifics the number of threads used by SpecFlow+Runner (aka SpecRun) to execute the tests.
Each of the threads are separated. The default is AppDomain isolation, so every thread runs in a separate AppDomain.
In the SauceLab example there are 7 scenarios and the runner is configured to use 10 threads. This means, every scenario is executed in a different thread with its own AppDomain. As no thread executes a second scenario, you get this error not in the example
With only one thread, your thread is executing more than one scenario and you get this issue.
Easiest fix would be, if you remove the static from the field. For every scenario you get a new instance of the binding class. You do not have to remember it static.
For a better example how to use Selenium with SpecFlow & SpecFlow+ have a look here: https://github.com/techtalk/SpecFlow.Plus.Examples/tree/master/SeleniumWebTest
You have to adjust the WebDriver- class for using SauceLabs over the RemoteWebDriver.
I was wondering if there is a service where I could send data and then group that data however I want and later display it in charts or similar?
What I want to do is - start protractor e2e tests and let them run forever. Since some of the tests randomly fail I can not rely on them if they were included in main build. What I'm going to do is run tests in each supported browser over and over again and then capture which tests failed in which browser, if they passed - reset failure counter and so on.. That way I can monitor how my system is doing without wasting my time waiting for build to run successfully.
My data could look something like that:
{
testName: 'Path to test + name',
status: 'failed/passed',
browser: 'firefox/chrome/safari/opera...'
}
Now when test fails in (let's say) chrome over and over again I will see that it's error counter is constantly increasing, that means something is either wrong with system or I need to fix test in chrome.
Does anyone know service that could consume my data and display aggregated info?
I have seen people posting about this here and elsewhere, but I haven't found any solution that works. I am using XCode 4.4 and have a bunch of unit tests set up. I have ran them all before on this project, so I know that they do pass/fail when they are supposed to if they are actually ran.
I have about 15 test suites, and each one contains 1-7 tests. On most attempts, all of the test suites finished (and passed) except for 1 (FooTests). It gives the warning:
FooTests did not finish
testFoo did not finish
XCode will report that testing was successful, regardless of what happens in unfinished tests. Another thing to note, sometimes it is a different test that will not finish, and sometimes multiple suites will not finish. I have not noticed a case where all tests do finish, but judging by this seemingly random behaviour I believe that it is possible.
So, is this a bug in XCode? I can't think of any other reason that tests randomly don't finish and then cause XCode to report that everything was successful. Are there any solutions?
I am on XCode 4.5.2. For application unit test, if your test suites finish so quick that the main application is not correctly loaded before that, you will get the warning. You can simply avoid the problem by adding a sleep at the end of your test like following. It doesn't happen for logic unit test.
[NSThread sleepForTimeInterval:1.0];
I've just had this problem with XC4.5DP4.
I had a test which does some work in a loop, and does nothing else when it falls out of the loop, and I was getting the "did not finish" error.
In an attempt to prove that the test was finishing, I added this as the very last line:
NSLog(#"done");
Not only does "done" get printed to the output - now Xcode says that the test has finished.
Seems to be a workaround... go figure.
I'm using XCode46-DP3 and I've just resolved this problem in my tests. I've several tests that start a web server and then execute http call to it; at the end of the test the web server is stopped. In last week these tests have begun to have the warning 'did not finish'.
For me has been enough to add the following sleep at the end of these tests (precisely I've added it in the tearDown):
- (void)tearDown {
[self.httpServer stop];
[NSThread sleepForTimeInterval:1.0];
self.httpServer = nil;
self.urlComposer = nil;
}
The problem seems that your tests terminate too quickly for Xcode to receive and parse the log messages that indicate failure or success. Sleeping for 1 second in the last test case run worked reliably for me, where 0.0 didn't. To see which test case is the last test case, check the test action in the Scheme dialog.
I created a separate WorkaroundForTestsFinishingTooFast test case, with a single method:
- (void)testThatMakesSureWeDontFinishTooFast
{
[NSThread sleepForTimeInterval:1.0];
}
The problem is that as you add more test cases, you'll have to ensure that this test is the last method run. That means removing and adding this class from the Test action as reordering of test cases is not allowed. On the other hand, you're only delaying your entire test bundle by 1 second.
I had the same warnings in the Log Navigator. I fixed it for me.
In my project I have got 2 Schemes, one for running the project and one for the unit tests.
Go to Product --> Edit Scheme...
Select the UnitTest Scheme in the scheme picker
Select the "Test"-Icon on the Left
Change the debugger from LLDB to GDB and press OK
Tests should finish now. (For me it worked fine)
For me the solution was to slim down the logging output from the parts of the app that the tests were testing. I think xcode couldn't parse the tests output in time because of the other output I had throughout the app.
I had the same problem running with XCode 4.6, the reason for it, in my case, was inconsistency between the scheme and the actual unit tests in the test suits.
In the scheme I had some suits checked but in their .m file some unit tests were commented.
To solve the problem: either uncomment the test or deselected the file/suit in the scheme and all shall became green again :)
for people like me that forgot how to reach the scheme these are the required steps:
right click on the project name in the scheme section (right to the stop button)
choose edit scheme
choose the test debug
click on the triangle next to the unit test project and next to each file you have a check box
uncheck files that you placed unit test in comments
hope this helps
The PHPUnit Selenium base class has an option to make a screenshot on failure, which is a huge help in finding out why the test failed. The selenium server, however, returns an error instead of a failure on any error condition other than explicit assert* calls (such us trying to do something with a non-existent element). If I try to make a screenshot after the server reports the error, I get another error saying that the server already discarded the session. Is there any way to change that behavior?
Update: this is because PHPUnit breaks the connection when it receives an error. I was able to change it by some (rather ugly) manipulation of the PHPUnit code.
Make those interactions as test cases.
For example in perl,
If it is written as below and fails due to a non-existent element. the script will error out
$sel->type("email-id","trial\#trial.com");
While if the above step is made as a test case by writing it as follows
$sel->type_ok("email-id","trial\#trial.com");
If there is a non-existent element, the test case will only fail, and the script will continue.
So using TAP (test any protocol) by using the module use Test::More; , if _ok is added after a function, the function return will be used to determine the fate of the test case.
ie. - A return of 'O' means the test Failed
and A return of '1' means the test Passed
It is not the Selenium server but the SeleniumTestCase class for PHPUnit 3.4 which automatically sends a stop command when it detects an error (Driver.php line 921). PHPUnit 3.6 seems handle errors better.
I think you can overwrite method 'travelbox' and make something like this:
public function onNotSuccessfulTest(Exception $e){
file_put_content('/xxx/xxx.jpg', $this->currentScreenshot());
}